The Periodic Table: A Mental Map
Like Duolingo, but for The Periodic Table: A Mental Map. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free during early access · No credit card · iPhone & Android
Key ideas in The Periodic Table: A Mental Map
- Happy Henry starts with the gas 'roof' (H, He)
- H and He occupy the first shell, which only holds two electrons
- The story moves through the 'Little Berry' (Li, Be) transition
- They sit above the main blocks to show they lack the 'p' subshell
- The sequence ends with the 'Flu-Neon' (F, Ne) light show
- Helium is a noble gas but only has two valence electrons
- The narrative sequence of the 'Happy Henry' mnemonic for the first ten elements
- The unique structural role of Hydrogen and Helium as the 'roof' of the table
- Lithium is the first solid and the start of the alkali metals
- The narrative sequence of the 'Happy Henry' mnemonic
- Beryllium adds hardness as the first alkaline earth metal
- Boron marks the shift from metallic to semi-conductive properties
- The unique structural role of Hydrogen and Helium
- Carbon, Nitrogen, and Oxygen are the primary building blocks of organic molecules
- They follow Boron and precede the Halogens in the p-block
- This trio is memorized together because they dominate biological chemistry
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives The Periodic Table: A Mental Map the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
Why do Hydrogen and Helium form their own unique row at the top of the periodic table?
Get it right to open this lesson and 67 more in the app.
Where The Periodic Table: A Mental Map takes you
Master the atomic landscape by memorizing every element, symbol, and number through advanced mnemonic systems and structural logic.
- 1
The Quick Start: Anchoring the First Ten
- The Hydrogen to Neon Sprint
- Visualizing the Table's Skeleton
- 2
The Main Group Pillars
- The Alkali and Alkaline Earth Metals
- The Boron and Carbon Families
- The Nitrogen and Oxygen Families
- Halogens and Noble Gases
- 3
The Transition Metal Valley
- The First Transition Series (21-30)
- The Second Transition Series (39-48)
- The Third Transition Series (72-80)
- 4
The F-Block: Lanthanides and Actinides
- The Lanthanide 'Rare Earths'
- The Actinide Series
- 5
The Logic of Symbols and Names
- The Latin and Greek Roots
- The Synthetic and Superheavy Naming
- 6
Advanced Retrieval Systems
- The Peg System for Atomic Numbers
- The Blank Table Reconstruction
- 7
The Final Synthesis
- Speed Drills and Fluency
- Maintaining the Mental Map
7 sections · 17 units · 68 levels. Built to play, not to enroll.
You pick the voice
The Periodic Table: A Mental Map is taught in the The Professor style: clear, structured, thorough. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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